Wireless Data Coding Selection for LTE-NR Compatibility
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting and receiving data signals between base stations and user equipment, particularly in supporting backward compatibility between LTE and NR systems, and optimizing coding schemes based on varying communication environments and data importance.
Innovation Solution
The method involves determining and applying either a turbo coding scheme or a Low Density Parity Check (LDPC) coding scheme for data signals based on factors like component carrier, subcarrier spacing, transmission bandwidth, and data rate, and using Radio Resource Control (RRC) signaling or Downlink Control Information (DCI) to transmit and receive these signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single coding scheme is used for all data signals, then device complexity is reduced, but coding gain and transmission efficiency deteriorate
Solution Approach 1:
The patent implements dynamic coding scheme selection where the base station determines and applies different coding schemes (turbo coding or LDPC coding) based on varying transmission conditions including component carrier type, subcarrier spacing, transmission bandwidth, and data rate. This dynamic adaptation allows the system to optimize coding gain for each specific transmission scenario while managing device complexity through standardized selection criteria.
2Adaptability or versatility
If multiple coding schemes are supported, then adaptability to different communication environments improves, but device complexity increases
Solution Approach 1:
The patent enables universal compatibility between LTE and NR systems by supporting multiple coding schemes (both turbo coding for LTE and LDPC coding for NR) within the same device architecture. The base station selectively applies the appropriate coding scheme based on the target system requirements, allowing a single device to serve multiple communication standards without requiring separate dedicated hardware for each standard.
3Productivity
If coding scheme selection is based on multiple parameters, then transmission efficiency improves, but determination complexity increases
Solution Approach 1:
The patent utilizes changes in key transmission parameters (component carrier type, subcarrier spacing, transmission bandwidth, data rate) as the basis for coding scheme selection. By establishing predetermined relationships between these parameters and appropriate coding schemes, the system achieves efficient automatic selection without requiring complex real-time analysis, thereby improving transmission efficiency while keeping determination complexity manageable through standardized parameter-based rules.
Data Source
AI summary
Disclosed are a method by which a base station and a terminal transmit and receive a data signal, and a device for supporting the same. More specifically, disclosed are: a method for efficiently transmitting and receiving a corresponding data signal between a base station and a terminal by using a coding scheme determined on the basis of various conditions for the transmitted data signal; and devices for supporting the same.